Truck box



FIG. 1 is a perspective view of a truck box showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a left side elevational view, the right side elevational view being a mirror image thereof.

The broken lines shown in FIGS. 1-4 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a truck box, as shown and described. 